Displaying apparatus.



L. J. GODDARD.

DISPLAYING APPARATUS.

APPLICATION FILED NOV. 16,1011.

Patented July 7, 191A 3 SHBETSSHE-ET l Lester Goddard Af/orney L. J.GODDARD. DISPLAYING APPARATUS. APPLICATION FILED NOV. 16, 1911' 3SHEET$SHEET 2.

Fig. 2

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Wt A A Inventor,

lnessfis? V Lester Gaddard,

L. J GODDARD.

DISPLAYING APPARATUS.

APPLICATION FILED NOV.16, 1911.

3 SHEETS-SHEET 3.

Inven [01",

Lesler aodddrd by W.

A/zorney Witnesses LESTER J. eonnannor savanna, omo.

DISPLAYING APPARATUS.

Specification of Letters Patent.

Patented uly 7,1914.

Application filed November 16, 1911. Serial No. 660,573.

To all whom it mag concern Be it known that I, LEsTER J. GODDARD," acitizen of the United States of America,

and a residentof the city of Ravenna, county of Portage, and State ofOhio, have invented certain new and useful Improvements in DisplayingApparatus, of which the following is a specification.

My invention relates to apparatus for the successive display'of platesor their projections-and has for its object such construction of theapparatus that the plates are brought into the desired position and heldthere the desired'length of time.

My invention is of general application for the successive display of anyreading mat-. ter, pictures, designs, charts, maps, figures,

letters, numerals, etc, or con1binations of them. I have illustrated itin connection with a projector for advertising purposes,

Mld'Wllih a chart for optical purposes, but do not intend to limit itthereby.

The projector shown is of the well-known type'commonly used forprojecting adverw tisements onto pavements and is chosen merely forconvenience of illustration.

.Whenany invention is applied thereto the plates are successivelybrought in line with the projecting lens and the advertisementssuccessively projected onto the pavement or other screen. When myinvention is used for this purpose it is convenient'to regulate theprocession" of plates. automatically by any desired means such asclockwork, but as the latter is not a part of the invention it is notillustrated. In'this connection I have'shown the advertising matterarranged on a disk which rotates 1n the line of the projecting lens.This I believe to be the most convenient method when a small numwhen oneadvertisement is to alternate with ablank. l I do not intend to belimited to this method as it is obvious other methods can 'be' used andmay bed'esirable when a large-number of advertisementsfis to bedisplayed and my invention contemplates such methods. 'As shown theadvertising matter is'stenciled. This is a'fl-desirableandinexpensive-method,but I do not intend to be limited thereto as my'in-vention contemplates the other well known methods emed in projectiononto a screen in use-for making -refractive tests of the eye.Asitlustrated, the letters te bedis he optical chart shown is one oftheplayed are brought successively in line with an aperture in an opaqueframe. As the length of time which it is desired to display any oneletter or group of letters is variable it is convenient to operatethefmechanism manually as by pressing a button, but as this forms nopart of myinvention it is not illustrated. As in the case of theprojector just referred to the letters are arranged on a rotating disk,but I do not intend to be limited to this method as other methods may beemployed and my invention contemplates such methods.

,I use the word plate as indicating that portion of matter to bedisplayed at any one time and not as indicating a mechanical entity.

In the three sheets of drawings which form apart of this applicationFigure lis a. perspective of my invention applied to a projector; Fig. 2is a front elevation thereof slightly turned and broken away; Fig. 3 1sa plan of my invention applied to an optical chart, the frame for thechart being in horizontal section; and Fig. 4 is a front elevationthereof, all of the figures showingthem'echanism in its displayingposition.

- Considering first the use of the invention in connection with aprojector, as illustrated in Figs. 1 and 2, the frame 1 of the projectoris provided with a slot oraperture 2. Upon this frame is attached amounting 3 in'which is journaled a shaft 4. -Rigidly mounted upon theshaft are a propelling ratchet 5, a holding ratchet 6, an arrestingratchet 7, a wheel 8 provided with teeth, and a disk 9.

The holding ratchet and arresting ratchet face in opposite direction'tothe propelling ratchet. A lever 10 is pivotally connecte with one endofthe mounting 3. Pawl 11 is pivotally connected with the lever 10 andengages the teeth of the ratchet 5. shown this pivoted connection is,made

through the agency of block 12, link 18, and,

arm 14, the end of which latter is loosely mounted on; the shaft 4. Thisconstruction is a convenient one, butobviously not the onl .0118 whichcan be cm lfoyed. Pawl 15 which engages ratchet 7 1s pivoted to themounting 3, and at the opposite end from the ratchet wheel is pivotallyconnected with the lever 10. The connectionshown comprises a link 16and' block 17. This is a convenient construction, butfobviously not theonly one which can-be employed. A

pawl 18 which engages with the-teeth of the wheel 8 is pivoted to an arm19, which is adjustably attached to the .mounting 3. This pawl is keptin such engagement with the teeth by means of a spring which is fastenedto the arm 19 in such a manner, thatlits tension may be convenientlyadjusted. The manner shown is by a screw 21. The spring-pressed pawl 22is pivoted to-the mounting 3 and engages the holding ratchet 6.- Anelectro-nfzagnet 23 is. attached to the mounting 3 in such a position astobe over I the lever 10, and is provided with two binding posts 24 2Athrough which current is supplied to the magnet. An armature 25 isattached to the lever 10 in line with the core of the magnet. The disk 9may have a series of openings 2 6 26 in which can be fastenedadvertising plates'27 which are as shown disks stenciled with thedesired advertising matter. Some of the plates may be blanks if desired.It is obvious that these plates need not be separate pieces from thedisk 9 and in such a case the openings 26 would be omitted.

The device is so constructed and mounted on the projector that the disk9 rotates through the aperture 2 and the advertising plates aresuccessively brought in line with the projecting lens.

4 While I have thus far described my invention with' respect to theprojector, the details of construction are for the most part identicalwhen used in connection with the optical chart and the correspondingparts bear thesame reference numerals. In the case of the optical chartillustrated in place of the projector the frame lis employed.

Thisframe is provided with an aperture 2.

A disk 9, which corresponds in function with the disk 9 is rigidlymounted upon the, shaft 4 and carries the desired lettering I arrangedin plates 27. The apparatus is so mounted in the frame 1 that the platespass in succession before the aperture 2".

In operation the electro-magnet 23 "is energized manually orautomatically as already indicated. When energized the arma-' ture 25'isdrawn toward the electro-magnet' and retained in that position while themagnet is energized. As the armature is thus raised the'pawl 11 turnsthe ratchet 5 and the plates 27 or 27 are. thereby advanced.

' The raising of the armature also brings the pawl 15 into engagementwith the ratchet 7. hisratchet is provided with teeth equal in number tothe plates, and the teeth are soplaced that when the pawl 15 makesengagemerit-with their faces, the plates 27 or 27 are arrested in properalinement with the apertures 2 or 2 respectively. When theelectro-magnet is deenergized, the armature falls and the engaging endof the pawl 15 is raised ready for the next advance. For a singledisplay the electro-magnet need only be energized for a sufficient timeto cause posits direction to t pawl pivoted to the mount ng andpivctally said advance and arrest. The holding ratchet 6 as shown beingprovided with a greater number of teeth than the number of plates 27 or27 cooperates with its engaging pawl 22to prevent any rearward rotationof the disk 9; and forward rotation thereof, except as desired byenergizing the magnet and regulated by ratchet 7 and pawl 15,. is takencare of by the wheel 8 and the pawl 18. The teeth of this wheel areequal in numher to the plates and are so arranged that the pawl is inengagement with their faces when the proper alinement of the plates andaperture is made. The faces of the advance side of the teeth areslightly out of aline ment with the-diameter of the'wheel. This permitsthe pawl to ride up on the teeth when the magnet is energized, but byreason of spring 20 offers sufiicient resistance against such a movementto prevent forward rotation of the disk whenalesser force from thatexerted by a-magnet is applied. Fineness of adjustment can be madeby.tilting the arm 19 around its holding and .mounting pin 28. to changethe position of the'pawl 18 and insure correct alinement of theadvertising plates 27 and 27 with the apertures 2 and 2 respectivelywhen the disks 9 and 9 are in their respective dis playing positions.

It is to be understood that I do not desire to be limited to the exactdetails shown and described, for-obvious modifications will occur tothose skilled in the art.

Having thus described my invention, what,

.I claim as new and desire to secure by Letters Patent of the UnitedStates, is-- 1. In an advancing and holding mechanism fordisplaying-apparatus the co nbination of a mounting, a shaftjournaledthereln, a propelling ratchet mounted on the shaft, a pawl in engagementwith the propelling ratchet, an armature with which I et facing inoppopelling ratchet, an armature with which the pawl is pivotallyconnected, a r r electromagnet for intermittently actuating'the armaturean arrestin ratchet facing in op e propelling ratchet, a

connectedto the armature in such a manner as to be brought into and outof engagement with the arresting ratchet by the movement of thearmature, a holding ratchet mounted on the shaft and facing in the samedirection as the propelling ratchet, and a pawl in engagement therewith,substantially as described.

3. In an advancing and holding mechanism for displaying-apparatus thecombination of a mounting, a shaft journaled therein, plates supportedfrom the shaft, a propelling ratchet mounted on the shaft, a pawl inengagement with the propelling ratchet, an armature with which the pawlis pivotally connected, an electro-magnet for intermittently actuatingthe armature, a wheel provided with teeth equal in number to the platesmounted on the shaft, a pawl in engagement therewith, an arm to whichthe pawl is pivotally mounted, said arm being adjustably attached to themounting, substantially as described.

4. In an advancing and holding mechanism for displaying-apparatus thecombination of a mounting, a shaft journaled in the mounting, platessupported from the shaft, a propelling ratchet mounted on the shaft, a

pawl in engagement with the propelling ratchet, an armature with whichthe pawl is pivotally connected, an electro-magnet for intermittentlyactuating the armature, a holding ratchet mounted on the shaft andfacing in the same direction as the propelling ratchet, a pawl inengagement therewith, an arresting ratchet mounted on the shaft andfacing in opposite direction to the propelling ratchet, a pawl pivotedto the mounting and pivotally connected to the armature in such a manneras to be brought into and out of engagement with the arresting ratchetby the movement of the armature, a wheel pro vided with teeth equal innumber to the plates mounted on the shaft, a pawl in engagementtherewith, and an arm to which the pawl is pivotally mounted, said armbeing adjustably attached to the mounting, substantially as described.

Signed by me at Ravenna, Ohio, this fourteenth day of November, 1911.

LESTER J. GODDARD.

WVitnesses S. F. HAUSELMAN, LEWIS MORGAN.

